1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/sound/rockchip-i2s.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Rockchip I2S controller 8 9description: 10 The I2S bus (Inter-IC sound bus) is a serial link for digital 11 audio data transfer between devices in the system. 12 13maintainers: 14 - Heiko Stuebner <heiko@sntech.de> 15 16allOf: 17 - $ref: dai-common.yaml# 18 19properties: 20 compatible: 21 oneOf: 22 - const: rockchip,rk3066-i2s 23 - items: 24 - enum: 25 - rockchip,px30-i2s 26 - rockchip,rk1808-i2s 27 - rockchip,rk3036-i2s 28 - rockchip,rk3128-i2s 29 - rockchip,rk3188-i2s 30 - rockchip,rk3228-i2s 31 - rockchip,rk3288-i2s 32 - rockchip,rk3308-i2s 33 - rockchip,rk3328-i2s 34 - rockchip,rk3366-i2s 35 - rockchip,rk3368-i2s 36 - rockchip,rk3399-i2s 37 - rockchip,rv1126-i2s 38 - const: rockchip,rk3066-i2s 39 40 reg: 41 maxItems: 1 42 43 interrupts: 44 maxItems: 1 45 46 clocks: 47 items: 48 - description: clock for I2S controller 49 - description: clock for I2S BUS 50 51 clock-names: 52 items: 53 - const: i2s_clk 54 - const: i2s_hclk 55 56 dmas: 57 minItems: 1 58 maxItems: 2 59 60 dma-names: 61 oneOf: 62 - const: rx 63 - items: 64 - const: tx 65 - const: rx 66 67 pinctrl-names: 68 oneOf: 69 - const: default 70 - items: 71 - const: bclk_on 72 - const: bclk_off 73 74 power-domains: 75 maxItems: 1 76 77 reset-names: 78 items: 79 - const: reset-m 80 - const: reset-h 81 82 resets: 83 maxItems: 2 84 85 port: 86 $ref: audio-graph-port.yaml# 87 unevaluatedProperties: false 88 89 rockchip,capture-channels: 90 $ref: /schemas/types.yaml#/definitions/uint32 91 default: 2 92 description: 93 Max capture channels, if not set, 2 channels default. 94 95 rockchip,playback-channels: 96 $ref: /schemas/types.yaml#/definitions/uint32 97 default: 8 98 description: 99 Max playback channels, if not set, 8 channels default. 100 101 rockchip,grf: 102 $ref: /schemas/types.yaml#/definitions/phandle 103 description: 104 The phandle of the syscon node for the GRF register. 105 Required property for controllers which support multi channel 106 playback/capture. 107 108 "#sound-dai-cells": 109 const: 0 110 111required: 112 - compatible 113 - reg 114 - interrupts 115 - clocks 116 - clock-names 117 - dmas 118 - dma-names 119 - "#sound-dai-cells" 120 121unevaluatedProperties: false 122 123examples: 124 - | 125 #include <dt-bindings/clock/rk3288-cru.h> 126 #include <dt-bindings/interrupt-controller/arm-gic.h> 127 #include <dt-bindings/interrupt-controller/irq.h> 128 i2s@ff890000 { 129 compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s"; 130 reg = <0xff890000 0x10000>; 131 interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; 132 clocks = <&cru SCLK_I2S0>, <&cru HCLK_I2S0>; 133 clock-names = "i2s_clk", "i2s_hclk"; 134 dmas = <&pdma1 0>, <&pdma1 1>; 135 dma-names = "tx", "rx"; 136 rockchip,capture-channels = <2>; 137 rockchip,playback-channels = <8>; 138 #sound-dai-cells = <0>; 139 }; 140